Viewing file:  scribble.py (2.33 KB) -rwxr-xr-x
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#!/usr/bin/env python
#this is a simple translation of the scribble example that comes with GTK+
import gtk
pixmap = None
def configure_event(widget, event):
global pixmap
win = widget.window
width, height = win.get_size()
pixmap = gtk.gdk.Pixmap(win, width, height)
pixmap.draw_rectangle(widget.get_style().white_gc, True,
0, 0, width, height)
return True
def expose_event(widget, event):
x, y, width, height = event.area
gc = widget.get_style().fg_gc[gtk.STATE_NORMAL]
widget.window.draw_drawable(gc, pixmap, x, y, x, y, width, height)
return False
def draw_brush(widget, x, y):
x, y = int(x), int(y)
pixmap.draw_rectangle(widget.get_style().black_gc, True,
x-5, y-5, 10, 10)
widget.queue_draw()
def button_press_event(widget, event):
if event.button == 1 and pixmap != None:
draw_brush(widget, event.x, event.y)
return True
def motion_notify_event(widget, event):
if event.is_hint:
x, y, state = event.window.get_pointer()
else:
x = event.x; y = event.y
state = event.state
if state & gtk.gdk.BUTTON1_MASK and pixmap != None:
draw_brush(widget, x, y)
return True
def main():
win = gtk.Window()
win.set_name("Test Input")
win.connect("destroy", lambda w: gtk.main_quit())
win.set_border_width(5)
vbox = gtk.VBox(spacing=3)
win.add(vbox)
vbox.show()
drawing_area = gtk.DrawingArea()
drawing_area.set_size_request(200, 200)
vbox.pack_start(drawing_area)
drawing_area.show()
drawing_area.connect("expose_event", expose_event)
drawing_area.connect("configure_event", configure_event)
drawing_area.connect("motion_notify_event", motion_notify_event)
drawing_area.connect("button_press_event", button_press_event)
drawing_area.set_events(gtk.gdk.EXPOSURE_MASK |
gtk.gdk.LEAVE_NOTIFY_MASK |
gtk.gdk.BUTTON_PRESS_MASK |
gtk.gdk.POINTER_MOTION_MASK |
gtk.gdk.POINTER_MOTION_HINT_MASK)
button = gtk.Button(stock=gtk.STOCK_QUIT)
vbox.pack_start(button, expand=False, fill=False)
button.connect("clicked", lambda widget, win=win: win.destroy())
button.show()
win.show()
gtk.main()
if __name__ == '__main__':
main()
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